My son in college now, but back when he was in like 9/10th grade, he worked at our rink running the scoreboard for the younger kids summer league. This was a very casual league, most of the kids were from the club that played out of this rink so everyone knew each other. It was all different skill levels and they even teams out as best they can. Like I said, pretty laid back, basically a way to get your kid on the ice once a week for 6 weeks during the summer. One game, neither of the refs showed up. The guy who runs the league asked my son if he wanted to ref. He reluctantly said yes because he just happened to bring his skates with him to get sharpened. Anyway, while he had played hockey for 6-7 years at that point, he's never reffed before. The think the age group was like 11-14, mix if PWs and Bantams. So, never reffed before and doing it alone and its summer league, you would think no one would care about missed calls. Well, he missed an offsides which lead to a goal and the coach for the team that got scored on start yelling and complaining and a few parents from the stands said stuff as well. The guy who ran the league was handling the scoreboard so he told the coach to chill out. Later, my son didn't call a penalty and again the coach started yelling again and parents said shit again. After the game, when the teams were shaking hands, the one coach shook my sons hand, but the complainer walked right past him. Seriously, how do people act like that to kids.
I know not every coach is like this, but it was an eye opener for my son. He had mentioned at times that he was thinking about going through the ref certification to earn some money, but he had no interest after that experience.